21998589 ÷ 141 
The aim is to understand the frequency of 141 in 21998589.

On to step 1:
141 goes into 2 0 times with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 141

Moving on to step 2:
When dividing 21 by 141, we get 0 with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Bring next digit (9) of the dividend behind the 21 and repeat the process: 219 / 141

Moving on to step 3:
219 divided by 141 is 1 with a remainder of 78.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 141 from 219 and we're left with 78.
Bring next digit (9) of the dividend behind the 78 and repeat the process: 789 / 141

Going ahead to step 4:
141 goes into 789 5 times with a remainder of 84.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Subtracting 705 from 789 leaves us with 84.
Include the next digit (8) from the dividend after 84, then repeat: 848 / 141

Let's proceed to step 5:
When dividing 848 by 141, we get 6 with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 156.0
If we subtract 846 from 848, we get 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 141

Moving on to step 6:
The number 141 fits into 25 0 times, leaving a remainder of 25.
Record the quotient 0 as the next digit in the result. 
Result so far: 1560.0
Subtract 0 from 25 to get 25.
Include the next digit (8) from the dividend after 25, then repeat: 258 / 141

On to step 7:
141 goes into 258 1 times with a remainder of 117.
Write down 1 as next digit of the result. 
Result so far: 15601.0
If we subtract 141 from 258, we get 117.
Fetch the next digit (9) from the dividend, attach it to 117 and continue: 1179 / 141

Going ahead to step 8:
1179 divided by 141 is 8 with a remainder of 51.
The number 8 becomes the next digit in our result. 
Result so far: 156018.0
If we take 1128 away from 1179, we end up with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Moving on to step 9:
510 divided by 141 is 3 with a remainder of 87.
Use 3 as the next digit of our solution. 
Result so far: 156018.3
If we take 423 away from 510, we end up with 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

On to step 10:
The number 141 fits into 870 6 times, leaving a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 156018.36
The remainder is 24 after subtracting 846 from 870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 11:
240 divided by 141 is 1 with a remainder of 99.
Write down 1 as next digit of the result. 
Result so far: 156018.361
If we subtract 141 from 240, we get 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

Advancing to step 12:
The number 141 fits into 990 7 times, leaving a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 156018.3617
Deduct 987 from 990 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 13:
When dividing 30 by 141, we get 0 with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 156018.3617
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 14:
141 goes into 300 2 times with a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 156018.361702
Deduct 282 from 300 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 15:
141 can be fit into 180 1 times, resulting in a remainder of 39.
The next digit of our result is 1. 
Result so far: 156018.3617021
If we take 141 away from 180, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Step 16:
The number 141 fits into 390 2 times, leaving a remainder of 108.
The number 2 becomes the next digit in our result. 
Result so far: 156018.36170212
If we take 282 away from 390, we end up with 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

The final result is 156018.36170212 with a remainder of 1.08e-07.